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Add 7/42 and 4/45

7/42 + 4/45 is 23/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 45 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    7/42 = 7 × 15/42 × 15 = 105/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    4/45 = 4 × 14/45 × 14 = 56/630
  4. Add the two fractions:
    105/630 + 56/630 = 105 + 56/630 = 161/630
  5. After reducing the fraction, the answer is 23/90

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